Why are chemical indicators useful in science?

All ova contain sex chromosomes corresponding to: x y xx xy

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

14) whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.